Lateral-motion device for locomotive driving boxes



Nov. 2o, 192s. 1,692,616

J. G. BLUNT LATERAL MOTION DEVICE FOR LOCOMOTIVE DRIVING BOXES Filed Nov. i9, 1927 //////l//l/////1. W

Nov.- zo, 192s. 1,692,616

lJ. G. BLUNTv LATERA'L MOTION DEVICE FOR LOCOMOTIVE DRIVING BOXES Filed Nov. 19, 1927 2 sheets-sneer 2 "Fl-|664."

&\\\\\\\\\\\\\\\\\\ HHLM Patented Nov. zo, 1928. .1,692,616

UNITED STATES vrecrear orifice.

JAMES G.` BLUNT, OF SCHENECTADY, NEW YORK.

LATERAL-MOTION DEVICE FOBALOCOMOTIVE DRIVING BOXES.

Application filed November 19, 1927. Serial No.v 234,322.

This invention relates to lateral motion deis bifurcated, and each of its legs, 20a, is vices, and has for an object to provide a deprovided, on each side, with a hub, 20h, to vice of such character, particularly adapted increase the bearing on the shaft. The lower for application to the driving boxes of locoend of each leg of the lever, is bifurcated, to 55 motives of the out-side bearing type, and provide two spaced knuckles, 20C, between which will exert a resistance, acting to hold which is fitted, on the pin, 20d, a roller, 20e. the driving boxes in normal central position The bifurcated ends of the lever are spaced on tangent track, the resistance being suiiia suilicient distance apart, so that the rollers, ciently yielding to permit a limited lateral v20e, bear on the side flanges, 15, of the driving 60 movement of the driving boxes to accombox. This construction permits the driving modate the locomotive to curved track, and box to rise and fall relatively to the frame. to enable the locomotive to absorb the vio- Each leg of the lever is formed, below the lent lateral stresses incident to service. hubs, with a projection or stop, 20f, adapted The improvement claimed is hereinafter to abut against the front face of the-side 65 fully Set forth, frames, to positively limit the travel of lower In the accompanying drawings: Figure 1 ends of the lever in one direction, for the is a side view, in elevation, of a locomotive nir-pose of storing power in a spring device, embodying the invention; Fig. 2, a fragmenwhich will be described hereinafter. tary view, in side elevation, showing the ap- The legs of the lever converge upwardly, 70

plication ofthe mechanism; Fig. 3, a view, in and are united, near their upper ends, by a perspective, of one of the rockers, Fig. 4, a bridge piece, 20g. Each lever is formed, at plan View, partly in Section, Of the construeits top, with two spaced lugs, 20, which extion shown in Fig. 2; and, Fig. 5, a front tend above the bridge piece, and are spaced View, partly in elevation and partly in Secapart to provide a socket, 20j, for the'recep- 75 tion, thereo tionof an end of a thrust rod, 21.

In the practice of the invention, referring Fitted on each end. of the'thrust rod, is descriptively to the specific embodiment a pair of spring seats, 22 and 23, between the thereof which is herein exempliiied as applied members of each pair of which is interposed in an electric locomotive of the outside bear e heleel Spring, 24t- The outer spring seats, so

ing type, comprising two articulated trucks, 22, aleslidably fitted on the rod, and each each having six driving wheels,the driving' lS plOvlded With a pair of concave recesses, boxes, 10of each of the outer. driving axles, in which are fittedv the rounded upper ends 11,0f the trucks, are slidably fitted in pedestal 0f the lug-5, 20h, 0f the levels. The nliel" jaws, 12, of the truck frames, 13, suitable spring s eat, 23, at one end of the rod, is held 85 shoes, 111, being provided on the jaws, to take against inward sliding movement4 on the rod, up for Wem; Each driving box is formed, by a shoulder, 25, while the other inner spring at each side, with a pair of vertical laterally seat is slidably mounted on the rod, so that projecting flanges, 15,which retain and guide 1t may be adjusted by the nut, 26, to vary the boxes in the pedestals. Suflicient clearthe Compression of the springs, desired. 90

ance is provided, between the flanges and the lock nut, 27, is provided to hold the nut, 26,

slices, to permit the necessary lateral move- 111 lS edlllsted positions. ment of the boxes, to accommodate the loco The operation of the appliance is as vmotive to curved track. OllOWSI l v v A spring saddle, 16, for a plate spring, 17, When the appliance is installed. the nut, 26, g5 is mounted on each of the driving boxes. is adjusted to give the springs suflicient com- The outer face of each ofthe side frame 'pression to tilt the levers inwardly, causing members of the truck is integrally formed, vthe rollers thereon to bear, with sufficient above the pedestal jaws, with two spaced force, on the driving boxes, to hold them knuckles, 18, having aligned bores for the central with the side frame members on 100 reception of a shaft, 19, which serves as a tangent track, and the stops, QOf, to contact fulcrum for the rocker lever, 20. The lever with the side frame members. l/Vhen the locomotive enters curved track, lateral forces are encountered, of sulicient magnitude to overbalance the force oi': the springs, and cause the driving boxes to move laterally of the side frame members, to accommodate the wheels to the track. This movementof the driving boxes will cause the one moving outwardly of its side frame member, totilt its associated lever outwardly, and as the other lever is held from inward movement by its stop, 20f, bearing on the adjacent side frame member, the springs, 24, will be additionally compressed to store sullicient power to enable the outwardly moved lever to restore the driving boxes to their normal central position, when the locomotive re-enters tangent track.

An additional important advantage of the described appliance is that it operates efliciently to absorb any 'violent lateral stresses which may be encountered in service.

The invention claimed as new and desired to be secured by Letters Patent is z 1. In a locomotive of the outside bearing type, the combination of a plurality of pairs of driving wheels; an axle for each pair of wheels, having journals disposed outside of the Wheels; a frame, comprising two side frame members supported by the journals; pedestals in said side frame members; driving boxes mounted on the journals and iitted in the pedestals, with the capacity of a limited lateral movement; a lever, fulcrumed at the outerside of each side frame member, and having a lower leg disposed below the fulcrum, adapted to bear on an adjacent driving box, and an upper leg disposed above the fulcrum; and means, associated with the upper legs of a pair of levers, disposed on opposite sides of the frame,lsaid means being adapted to store sulicient power when one of the levers is tilted b an outward lateral movement of a driving ox, to cause the tilted lever to restore the outwardly moved driving box to normal position, when the force causing such voutward lateral movement is removed.

2. In a locomotive of the outside bearing type, the combinationl of a plurality of pairs of driving wheels; an axle for each pair of wheels, having journals disposed outside of the wheels; a frame comprising two side frame members supported by the journals; pedestals, in said side frame members driving boxes, mountedon the journals, and fitted in the pedestals, with the capability of a limited lateral movement; a lever,- fulcrumed at the outerside of each side frame member, and having a lower leg, disposed below the fulcrum, adapted to bear on the adjacent side frame and the adjacent driving box, and an upper leg, disposed above the fulcrum; and means, associated with the upper legs of a pair of levers` disposed on opposite sides of the frame, said means embodying a helical spring, and being adapted to store suficient power in said spring, when one of the levers is tilted by an outward lateral movement of a driving box, to cause the tilted lever to restore the outwardly moved driving box to normal position, when the force causing such outward lateral movement is removed.

In a locomotive of the out-side bearing type, the combination of a plurality of pairs of driving wheels; an axle for each pair of wheels, having journals disposed outside of the wheels; a frame comprising two side frame members, supported by the'journals; pedestals, in said side frame members; driving boxes mounted on the journals, and fitted in the pedestals, with the capability of a limited lateral movement; and means, exerting a yielding resistance, adapted to hold the driving boxes in normal central position,r relatively to the side frame members, when the locomotive is traversing tangent track and to permit a limited lateral movement of the driving boxes, when the locomotive is traversing curved track, said means comprising a pair of levers, one fulcrumed at the outer side of each of the side frame members, each lever having a lower leg, disposed belowthe fulcrum, adapted to bear on the adjacent side frame member, and on an adjacent driving box, and an upper leg, disposed above the fulcrum; a rod, disposed transversely of the frame; a pair of spring seats at one end of the rod, one of the spring seats being normally held in lixed position on the rod, andthe other spring seat being freely slidable therealong, one of the spring seats being adapted to bear on the upper leg of one of the levers; means for adjusting the position of at least one of the spring seatswith relation to the other; and a helical spring interposed between the seats and normally held under compression thereby.

4. In a locomotivey ofthe outside bearing type, the combination of a plurality of pairs of driving wheels; an axle for each pair of wheels, having journals disposed outside of the wheels; a. frame, comprising two side frame members supported by the journals; pedestals in said side frame members; driving boxes, mounted on the journals, and fitted in the pedestals, with the capability of a limited lateral movement; and means, exerting a yielding resistance, adapted to hold the driving boxes -in normal central position, relatively to the side frame members, when the locomotive is traversing tangent track, and to permit a limited lateral movement of the driving boxes, when the locomotive is traversing curved track, said means comprising a pair of levers, one fulcrumed at the outer side of each ofthe side frame members,

each lever embodying a pair of lower legs, disposed below the fulcrum, and anj upper leg disposed above the fulcrum, a stop on each of the lower legs, adaptedto bear on the outerside of the adjacent side frame member, ing means engaging the upper ends of the and u roller mounted at the lower end of each levers, the inner spring seats being normally of the lower legs, and bearing on the adjacent fixed on the rod; a helical spring between the 10 driving box; a thrust rod disposed transmembers of each pair of seats; and means for 5 versely of the frame; a pair of spring seats adjusting at least one of the inner seats.

at each end of the rod, the outer spring seats being slidably mounted on the rod, and havo JAMES G. BLUNT. 

